auto save

my_music.py

@@ -55,7 +55,11 @@ while True:
                        else:
                           play_button = play_img
                           pygame.mixer.music.pause()
-
+                    if x>120 and x<220 and y>350 and y<400:
+                        num-=1
+                        if num<0:
+                            num=len(music_list)-1
+                            pygame.mixer.music.play
     if pygame.mixer.music.get_busy() == False:
         num+=1
         if num > len(music_list)-1: